Re: want more towing hp
you wont hold 400 to long towing that much on a stock trans if at all, so if you have a stock trans, then get a built one and a good tranny cooler. then drop in 160/100 injectors, 38r and maybe a stronger HPOP
(adrenaline, t500), that would put you well over 400 but you can tune them down to around 400 and if you ever wanted more it would be a change in tunes. thats what i would do, theres a lot of different setups to get 400, im sure others will chime in.
2000 Ford F250 7.3 4x4. MODS: Beans Tunes, Jegs 4" exhaust, S&B intake, boost fooler, USA poted housing, RR billet wheel for ported housing, HFO, glowshifts 3-in-1 gauge pyro, boost, trans. AIH delete, bellowed uppipes, Sinister Diesel coolant filter.